<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>100x100红色方形盒子</title>
  <link rel="stylesheet/less" type="text/css" href="../less/demo3.less" />
</head>
<body>
  <div class="box"></div>
  <script src="../scripts/less.min.js" ></script>
</body>
</html>